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Diffstat (limited to 'remote_cmds/telnet.tproj/main.c')
-rw-r--r-- | remote_cmds/telnet.tproj/main.c | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/remote_cmds/telnet.tproj/main.c b/remote_cmds/telnet.tproj/main.c new file mode 100644 index 0000000..fd01a30 --- /dev/null +++ b/remote_cmds/telnet.tproj/main.c @@ -0,0 +1,379 @@ +/* + * Copyright (c) 1988, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if 0 +#ifndef lint +static const char sccsid[] = "@(#)main.c 8.3 (Berkeley) 5/30/95"; +#endif +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/contrib/telnet/telnet/main.c,v 1.20 2005/01/09 10:24:45 maxim Exp $"); + +#include <sys/param.h> +#include <sys/socket.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "ring.h" +#include "externs.h" +#include "defines.h" + +#ifdef AUTHENTICATION +#include <libtelnet/auth.h> +#endif +#ifdef ENCRYPTION +#include <libtelnet/encrypt.h> +#endif + +/* These values need to be the same as defined in libtelnet/kerberos5.c */ +/* Either define them in both places, or put in some common header file. */ +#define OPTS_FORWARD_CREDS 0x00000002 +#define OPTS_FORWARDABLE_CREDS 0x00000001 + +#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) +char *ipsec_policy_in = NULL; +char *ipsec_policy_out = NULL; +#endif + +extern int tos; + +int family = AF_UNSPEC; + +/* + * Initialize variables. + */ +void +tninit(void) +{ + init_terminal(); + + init_network(); + + init_telnet(); + + init_sys(); +} + +static void +usage(void) +{ + fprintf(stderr, "usage: %s %s%s%s%s\n", + prompt, +#ifdef AUTHENTICATION + "[-4] [-6] [-8] [-E] [-K] [-L] [-N] [-S tos] [-X atype] [-c] [-d]", + "\n\t[-e char] [-k realm] [-l user] [-f/-F] [-n tracefile] ", +#else + "[-4] [-6] [-8] [-E] [-L] [-N] [-S tos] [-c] [-d]", + "\n\t[-e char] [-l user] [-n tracefile] ", +#endif + "[-r] [-s src_addr] [-u] ", +#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) + "[-P policy] " +#endif +#ifdef ENCRYPTION + "[-y] [host-name [port]]" +#else /* ENCRYPTION */ + "[host-name [port]]" +#endif /* ENCRYPTION */ + ); + exit(1); +} + +/* + * main. Parse arguments, invoke the protocol or command parser. + */ + +int +main(int argc, char *argv[]) +{ + u_long ultmp; + int ch; + char *ep, *user; + char *src_addr = NULL; +#ifdef FORWARD + extern int forward_flags; +#endif /* FORWARD */ + + tninit(); /* Clear out things */ + + TerminalSaveState(); + + if ((prompt = strrchr(argv[0], '/'))) + ++prompt; + else + prompt = argv[0]; + + user = NULL; + + rlogin = (strncmp(prompt, "rlog", 4) == 0) ? '~' : _POSIX_VDISABLE; +#ifdef AUTHENTICATION + autologin = 1; +#else + autologin = -1; +#endif + +#ifdef ENCRYPTION + encrypt_auto(1); + decrypt_auto(1); +#endif + +#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) +#define IPSECOPT "P:" +#else +#define IPSECOPT +#endif + while ((ch = getopt(argc, argv, + "468EKLNS:X:acde:fFk:l:n:rs:uxy" IPSECOPT)) != -1) +#undef IPSECOPT + { + switch(ch) { + case '4': + family = AF_INET; + break; +#ifdef INET6 + case '6': + family = AF_INET6; + break; +#endif + case '8': + eight = 3; /* binary output and input */ + break; + case 'E': + rlogin = escape = _POSIX_VDISABLE; + break; + case 'K': +#ifdef AUTHENTICATION + autologin = 0; +#endif + break; + case 'L': + eight |= 2; /* binary output only */ + break; + case 'N': + doaddrlookup = 0; + break; + case 'S': +#ifdef HAS_GETTOS + + if ((tos = parsetos(optarg, "tcp")) < 0) + fprintf(stderr, "%s%s%s%s\n", + prompt, ": Bad TOS argument '", + optarg, + "; will try to use default TOS"); +#else +#define MAXTOS 255 + ultmp = strtoul(optarg, &ep, 0); + if (*ep || ep == optarg || ultmp > MAXTOS) + fprintf(stderr, "%s%s%s%s\n", + prompt, ": Bad TOS argument '", + optarg, + "; will try to use default TOS"); + else + tos = ultmp; +#endif + break; + case 'X': +#ifdef AUTHENTICATION + auth_disable_name(optarg); +#endif + break; + case 'a': +#ifdef AUTHENTICATION + /* It's the default now, so ignore */ +#else + autologin = 1; +#endif + break; + case 'c': + skiprc = 1; + break; + case 'd': + telnet_debug = 1; + break; + case 'e': + set_escape_char(optarg); + break; + case 'f': +#ifdef AUTHENTICATION +#if defined(KRB5) && defined(FORWARD) + if (forward_flags & OPTS_FORWARD_CREDS) { + fprintf(stderr, + "%s: Only one of -f and -F allowed.\n", + prompt); + usage(); + } + forward_flags |= OPTS_FORWARD_CREDS; +#else + fprintf(stderr, + "%s: Warning: -f ignored, no Kerberos V5 support.\n", + prompt); +#endif +#else + fprintf(stderr, + "%s: Warning: -f ignored, no Kerberos V5 support.\n", + prompt); +#endif + break; + case 'F': +#ifdef AUTHENTICATION +#if defined(KRB5) && defined(FORWARD) + if (forward_flags & OPTS_FORWARD_CREDS) { + fprintf(stderr, + "%s: Only one of -f and -F allowed.\n", + prompt); + usage(); + } + forward_flags |= OPTS_FORWARD_CREDS; + forward_flags |= OPTS_FORWARDABLE_CREDS; +#else + fprintf(stderr, + "%s: Warning: -F ignored, no Kerberos V5 support.\n", + prompt); +#endif +#else + fprintf(stderr, + "%s: Warning: -F ignored, no Kerberos V5 support.\n", + prompt); +#endif + break; + case 'k': +#ifdef AUTHENTICATION +#if defined(KRB4) + { + extern char *dest_realm, dst_realm_buf[], dst_realm_sz; + dest_realm = dst_realm_buf; + (void)strncpy(dest_realm, optarg, dst_realm_sz); + } +#else + fprintf(stderr, + "%s: Warning: -k ignored, no Kerberos V4 support.\n", + prompt); +#endif +#else + fprintf(stderr, + "%s: Warning: -k ignored, no Kerberos V4 support.\n", + prompt); +#endif + break; + case 'l': +#ifdef AUTHENTICATION + /* This is the default now, so ignore it */ +#else + autologin = 1; +#endif + user = optarg; + break; + case 'n': + SetNetTrace(optarg); + break; + case 'r': + rlogin = '~'; + break; + case 's': + src_addr = optarg; + break; + case 'u': + family = AF_UNIX; + break; + case 'x': +#ifndef ENCRYPTION + fprintf(stderr, + "%s: Warning: -x ignored, no ENCRYPT support.\n", + prompt); +#endif /* ENCRYPTION */ + break; + case 'y': +#ifdef ENCRYPTION + encrypt_auto(0); + decrypt_auto(0); +#else + fprintf(stderr, + "%s: Warning: -y ignored, no ENCRYPT support.\n", + prompt); +#endif /* ENCRYPTION */ + break; +#if defined(IPSEC) && defined(IPSEC_POLICY_IPSEC) + case 'P': + if (!strncmp("in", optarg, 2)) + ipsec_policy_in = strdup(optarg); + else if (!strncmp("out", optarg, 3)) + ipsec_policy_out = strdup(optarg); + else + usage(); + break; +#endif + case '?': + default: + usage(); + /* NOTREACHED */ + } + } + if (autologin == -1) + autologin = (rlogin == _POSIX_VDISABLE) ? 0 : 1; + + argc -= optind; + argv += optind; + + if (argc) { + char *args[9], **argp = args; + + if (argc > 2) + usage(); + *argp++ = prompt; + if (user) { + *argp++ = strdup("-l"); + *argp++ = user; + } + if (src_addr) { + *argp++ = strdup("-s"); + *argp++ = src_addr; + } + *argp++ = argv[0]; /* host */ + if (argc > 1) + *argp++ = argv[1]; /* port */ + *argp = 0; + + if (setjmp(toplevel) != 0) + Exit(0); + if (tn(argp - args, args) == 1) + return (0); + else + return (1); + } + (void)setjmp(toplevel); + for (;;) { + command(1, 0, 0); + } + return 0; +} |